What's happening to me?

im thinking vamp
psychic vampire

It could just be a spontaneous splurge of energy. Or for all you know you could be feeding off him. I feel that way around my x (who for what ever reason I still love her even after she broke my heart twice). When I'm with her I always feel energized and she allways gets tired (it's quite odd)

Find him again and talk to him about energy....if he is familiar with it then kindly ask him if he can stop draining you. It may be accidental. Energy transfer is a very fun thing in relationships, but if used wrong it can harm you in a negative way. But please be careful, your conditions may not even involve him, get a simple check with your doctor if this continues, if nothing on that area seek help from your friendly witch or psychic.